Senior Mobile Engineer (React Native)
About The Position
Arcus is building a self-custodied platform that brings crypto, stock tokens, commodities, and perpetual futures into one account. The Senior Mobile Engineer will build and enhance the Arcus mobile application using React Native, owning mobile features from architecture and implementation through testing, release, and ongoing maintenance. The role works closely with designers, backend engineers, and cross-functional teams to deliver intuitive, performant trading experiences and help define the mobile platform’s technical direction. The engineer will work on technologies that interface directly with blockchain networks, wallets, and decentralized protocols, while improving application performance, reliability, observability, and developer experience. The role requires significant mobile engineering experience, production React Native expertise, and experience supporting applications on both iOS and Android. The published salary range is $210,000–$270,000 for New York. Compensation depends on experience and location; the stated range excludes possible variable compensation such as merit increases, bonus eligibility, commission, or equity incentives.
Requirements
- Demonstrated technical excellence and a record of shipping high-quality mobile applications at scale.
- Strong experience building and maintaining production React Native applications.
- Proficiency in JavaScript and TypeScript.
- Deep understanding of mobile application architecture, state management, networking, performance optimization, and testing.
- Experience publishing and supporting applications on both iOS and Android platforms.
- Strong product sense and attention to user experience details.
- Ability to learn quickly and master new technologies and complex systems.
- At least 5 years of software engineering experience, including significant experience building mobile applications.
- Experience collaborating with designers, product managers, and backend engineers in fast-paced environments.
Nice To Haves
- Experience building financial, trading, fintech, or security-sensitive applications.
- Experience with native iOS (Swift) and/or Android (Kotlin) development.
- Experience with React Query, Redux, Zustand, or similar state management solutions.
- Experience building highly performant real-time applications.
- Experience working with crypto wallets, blockchain technologies, or DeFi products.
- Familiarity with CI/CD pipelines, automated testing, and mobile release processes.
- Experience mentoring engineers and influencing technical direction.
Responsibilities
- Build and enhance the Arcus mobile application using React Native.
- Own end-to-end mobile features, from architecture and implementation through testing, release, and ongoing maintenance.
- Collaborate with designers and backend engineers to deliver intuitive and performant mobile experiences.
- Help define the technical direction and architecture of the mobile platform.
- Improve application performance, reliability, observability, and developer experience.
- Work with technologies that directly interface with blockchain networks, wallets, and decentralized protocols.
- Partner with cross-functional teams to deliver best-in-class trading experiences on mobile.
Benefits
- Unlimited flexible PTO and 11+ paid company holidays.
- Company-paid medical, dental, and vision coverage.
- 401(k) with company match.
- Paid parental leave.
- $300/month wellness stipend.
- $125/month commuter benefit.
- $200/month phone and internet stipend.
- $1,700 in-office setup allowance plus up to $1,000 for a home office.
- Free lunch at the office and dinner after 6 PM.
- Two team offsites per year.
- Team bonding events, including restaurants, comedy shows, and escape rooms.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
